Improvement in water-closets



J. H. STEVENS.

Water-Closet.

No. 199,326. Patented 1an. 15, 1878.

FTE. l

INVEN'TUR UNIT-ED STATES PATENT OFFICE.

)JOHN H. STEVENS, 0E CAMBRIDGE, MASSACHUSETTS vIMPRODVEIYI ENT- IN WATER-CLOSETS.

Specification forming part of Letters Patent No. 199,326, dated January 15, 1878 application led I November 12, 1877.

To all 'whom fit may concern y Be it known that I, JOHN H. STEVENS, of Cambridge, in .the county of Middlesex, inV the State of Massachusetts, have invented an Improvement in Water-Closets, of which the following is a specification:

This invention relates particularly to the ventilation of water-closets, and the conductingof offensive odors from the bowl or receiver, or from both, to the hot-iue of a chimney, or some other convenient exit to the open air, by means of the following-described arrangement of pipes or passages, by which a continual circulation of air is maintained in the bowl, and

. the danger from an overflow of wat-er into the escape pipes or passages from the bowl or receiver averted. A

Reference is made to the accompanying drawing, forming a part of the specification in eX- plainin gthe nature of my invention, in which- Figure l is a plan of a water-closet, showing, in dottedflines and in plan, where the top of the boxing of the closet is broken away, my

invention. Fig. 2 is a side elevation of the but, as this pipe is never carried above the top of the bowl, there is constant danger of an overflow of water from the receiver or bowl into the discharge-pipe, consequent upon some obstruction in the waste-pipe of the closet or derangement of the apparatus regulating the supply of water to the bowl, which, as these pipes are not often water-tight, might result in Serious damage by its leakage therefrom vand its escape into the ue of the chimney.

To obviate this danger, and to provide a more efficient circulation of pure air, I connect the receiver A and the bowl B with the vertical pipe or air-passage C at a point above the level of the top of the bow] by the pipe or passage D, provided with the branches D2 D3, the former of which opens into the receiver and the latter into the bowl. The vertical pipe or air-passage C opens into the horizontal pipe E, generally laid under the oor, leading to the hot-iue or other passage, F.

The lower portion of the cover and seat of the bowl is cut away, as shown at a in Figs. 2 and 3, to furnish an opening into pipe Dfroln the bowl.

A pipe, G, connects the waste-pipe H of the water-closet, above the stench-trap preferably, with the waste-pipe of abath-tub or set- 'bowl, or other waste-pipe. although it may eX-' tend to the exterior of the building.

By the rst system of pipes-namely, the pipes D, D2, D, G, and F-all impure air in the bowl and receiver is conducted to the outer air without the possibility of an overow of water into the pipe C.

Of course, I may dispense with one of the two pipes D2 D3 where one will do as well, and that one may conduct the impure air either from the receiver or the bowl.

By the addition of the pipe G a continual circulation of air is provided from the wastepipe of the bath-tub, set-bowl, or other wastepipe, or the outer air through the waste-pipe H, the receiver A, and the escape system D2 O F to the outer air.

It will be observed that the pipe D3 is surrounded by a rim, b, to prevent the escape of water into the pipe while the seat is being washed; or said rim may be formed by the extension of pipeD2 above the level of the recess a.

When the Ventilating supply-pipe G enters the soil-pipe H at the level of the water-seal, the waterin the trap will be somewhat agitated by the current of air.

The impure air and foul odor and gases in the closet, by the described system of circulation and ventilation, are effectually prevented from escaping into the room during the use and immediately after the use of the closet, as wel] as at all other times.

I claim- 1. The combination,in a water-closet, of the pipes D2 D3, opening, respectively, from the receiver and the bowl, or either of said pipes, arranged to open into the vertical pipe C above the top of the bowl, the vertical pipe G, and the pipe E, leading to the hot-flue of a chimney, or some other passage to the outer air,

al1 arrangedsubstantially as and for. the purand below the lippersurfaee of the seat, lead` pose described. I ing to the ventilating-iue D3, in combination 2. The combination of the Ventilating supwith an upwardly-projecting rim, b, around p1y-pipe Gr, opening into the Waste-pipe H the orice of the Ventilating-ihre, lsubstantially above or at its Water-sea1,and the receiver A, as described, and for the purpose set forth.

and the Ventilating delivery-pipe D2 all arranged substantially as described, for 7the pur- JOHN H STEVENS pose set forth. Witnesses:

3. A Water-closet provided with a ventilat- F.l F. RAMOND, 2d.,

ing-conduit, a', above the edge of the bowl E. A. M. CLARKE. 

